After politely sending the middle-aged man away, Liu Zhicheng turned his gaze to the young man who had just come in, bowed slightly and asked with a smile: "This Lang Jun, did you ask the book "Mathematics" just now?" We still have a few sets of ...... in our store."

"No, no, I've already bought Math!"

Before Liu Zhicheng finished speaking, the other party hurriedly shook his head and said, "What I want is the ...... in the back That's what's behind these six volumes of Mathematics! ”

"Uh...... Back? ”

After listening to the other party's words, Liu Zhicheng was stunned.

"Yes, the back, do you have it here? How many copies are there? How much? ”

"This ......"

Facing the urgent questioning of the young man Langjun, the corners of Liu Zhicheng's mouth twitched twice, and he quickly shook his head and said: "We really don't have this in our store, and ...... This set of books is available in our store, and you can't find the content behind it even if you look for Chang'ancheng, because there is no such thing at all! ”

"Huh? There was no ......."

After listening to his answer, a look of disappointment naturally appeared on the young man's face.

And after seeing his expression, Liu Zhicheng's eyes when he looked at the young man also became strange.

Chase after the book behind "Mathematics"?

Tsk, this is the first time he's met this kind of person!

Although Liu Zhicheng is also a beneficiary of "Mathematics...... Or the beneficiary of the force, after all, if he hadn't learned these things by relying on Ma Liang, he would not have been able to become the shopkeeper of Xinhua Bookstore. Because if you want to be a shopkeeper, the first requirement is to be able to use Tianzhu numbers to keep accounts, settle accounts, and use them to fill in various forms every month.

But from the bottom of his heart, Liu Zhicheng doesn't like this thing.

Because in addition to being very hard to learn, what is more important is that after having Tianzhu numbers and simple algorithms, as well as abacus, they are the shopkeepers...... How so? Anyway, the possibility of wanting to make some profit in the store is almost eliminated!

How many pieces of paper and how many books are sent each month, remember clearly in the account book!

As far as this thing in Xinhua Bookstore is concerned, anyway, an account book is calculated at most, and it is at most a matter of time, so there is no need to wait until the end of the year, Liu Zhicheng has to report the account with the housekeeper Han Lucheng once a month, and then summarize it to the princess Fang Fengzhu!

As for the princess's side......

Anyway, according to Liu Zhicheng's idea, it took half an hour to calculate the accounts of Xinhua Bookstore, plus all the properties of the palace, that is, two or three days?

Of course, these are just Liu Zhicheng's ideas, but so far dozens of sets of "Mathematics" have been sold, and the one who came back to find the "book behind" is the little Langjun in front of him!

What does he want to do in the rest of the book?

Looking at the other party's disappointed look, Liu Zhicheng couldn't help but be a little curious...... Suddenly, he seemed to think of this little Langjun, who should have seen the book "Mathematics" by chance when he came to hang out with two relatives before, and bought it back to read.

And...... Seems to be from out of town?

Just when Liu Zhicheng was secretly guessing, the other party suddenly asked: "Shopkeeper, since you said that this set of books is only available in your store, then you must know who wrote it, right?" ”

"Huh? Lang Jun, what are you asking for? ”

With a stirring spirit all over his body, Liu Zhicheng's brows suddenly wrinkled.

That's right, "Mathematics" is sold in Xinhua Bookstore, and many people in Chang'an City should know that this set of books was written by the king. But on this set of books, no matter where you can't find any words related to Han Wangfu!

The reason is simple, it is afraid of trouble.

So when he heard the boy ask who wrote this set of books, Liu Zhicheng immediately frowned.

After seeing his expression, the other party raised his eyebrows and said, "What to do?" Of course, I want to visit my home and ask if the book behind me has been written! Shopkeeper Liu, I am very interested in "Mathematics", please let me know if it is convenient. ”

“……”

His eyelids jumped, and Liu Zhicheng was speechless.

But he didn't hesitate, he shook his head directly and smiled: "I'm sorry, this Langjun, I can't be the master of this matter, let alone tell you...... You can only wait slowly to buy new books when they come! ”

"Huh?"

Hearing Liu Zhicheng's words, the young man's face became gloomy.

Smiling slightly, Liu Zhicheng didn't care.

Whether it is the clothes on his body or his appearance and temperament, it all shows one point, that is, the young man in front of him is not a layman, if you look at the little guy standing at the door, Liu Zhicheng can be sure that the other party is definitely the son of an official eunuch.

So at this time, the young man's face was gloomy, and he looked at himself with "majesty" on his face, Liu Zhicheng was not surprised.

If it is really the son of an official eunuch, he will naturally not take the shopkeeper of a bookstore in his eyes, especially if this guy may still be from the "countryside" outside Chang'an, then it is even more likely.

Only, so what?

Liu Zhicheng didn't dare to say that he knew all the second-generation people of this age in Chang'an City, but at least he could guarantee that the person in front of him was definitely not one of the objects he needed to scruple about.

Just when Liu Zhicheng was mentally prepared and said that he wanted to entangle with the other party, he saw that the young man took a few deep breaths, and the expression on his face gradually eased.

Such a performance made Liu Zhicheng stunned for a moment.

Awesome!

With such control at such an age, it seems that this young man's tutor is not ordinary!

And at this time, I only heard the young man speak: "Shopkeeper, I am a student, I really like this set of books, can you be accommodating and tell me its source?" ”

"Huh? Too student? ”

After hearing the other party's words, Liu Zhicheng's eyes widened instantly, and his expression became surprised.

The so-called Tai students are actually the students of Guozijian.

After the founding of the Tang Dynasty, it inherited the regulations of the former Sui Dynasty and set up the Guozijian in Chang'an, which belonged to one of the yamen of the court. Both managers and teachers belong to state officials, and the existence of the nature of "civil servants". And under Guozijian, there are Guozixue, Taixue and Simenxue.

Guozi is the highest learner, and he is too learned.

For example, the four schools accept the children and grandchildren of officials above the seventh grade, while the Taixue school accepts the children and grandchildren of officials above the fifth grade.

Sanpin, what is that concept?

When the dynasty is slaughtered, it is just three products.

So it is conceivable that if you can enter Taixue, this young man's family can be regarded as quite powerful.

It's just that even if the family is the second generation of power, as a slave of the prince of the dynasty, although Liu Zhicheng will not deal with it proudly, at least he will not be afraid, right? It's just that after knowing the identity of the other party's student, Liu Zhicheng hesitated for a moment, and finally shook his head and said respectfully: "Lang Jun, it's not that I don't want to tell it, it's really my master who specially explained it......"

To put it mildly, Liu Zhicheng finally dispelled the other party's thoughts.

But in the end, the young man still bit his lip and insisted: "Shopkeeper Liu, when a new book comes out, can you send someone to Taixue to bring me a letter?" ”

"This ......"

Without waiting for Liu Zhicheng, who hesitated, to answer, the other party had already continued: "Just send someone to send a message to Taixue and tell them to find Zhang Cambodia......